Moretta Iolanda, Principato Simona, Giglia Giuseppe, Lepri Elvio, Principato Mario Antonello
Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, 06126 Perugia, Italy.
Urania Research Centre, Via del Mattatoio Vecchio 7, 06063 Magione, Italy.
Animals (Basel). 2025 Jul 9;15(14):2024. doi: 10.3390/ani15142024.
(Vizioli, 1870), a tissue-dwelling mite responsible for nodular acariasis in birds, was identified from two hens reared in a rural backyard flock in Umbria, Italy. Adult mites were found in the subcutaneous tissue and on the serosal surface of various internal organs. Larval and first- and second-stage nymphal forms were observed beneath the skin and near the trachea and esophageal serosa. By comparing the existing literature with that reported in the present study, we propose a hypothetical reconstruction of the parasite's life cycle. It is postulated that the entry of occurs through the cervical skin, where adults mate and larviparous females give birth to larvae. These larvae migrate into the loose connective tissues surrounding the trachea and esophagus, where they develop into nymphs. The immature forms then progress along the esophagus and trachea to reach the thoracic and abdominal cavities, colonizing the serosal surfaces of visceral organs. It remains unclear whether, or how, the mites return to the subcutaneous tissues to complete their maturation. Senescent specimens degenerate within the subcutis, where they are encased by a granulomatous inflammatory reaction that leads to the formation of characteristic calcified nodules.
（维佐利，1870年），一种导致鸟类结节性螨病的组织内寄生螨，是从意大利翁布里亚一个农村后院鸡群中饲养的两只母鸡身上鉴定出来的。在皮下组织以及各种内脏器官的浆膜表面发现了成年螨。在皮肤下方以及气管和食管浆膜附近观察到了幼虫以及第一和第二阶段若虫形态。通过将现有文献与本研究报告的内容进行比较，我们提出了该寄生虫生命周期的假设性重建。据推测，螨通过颈部皮肤进入，成年螨在那里交配，产幼虫的雌螨在那里产下幼虫。这些幼虫迁移到气管和食管周围的疏松结缔组织中，在那里发育成若虫。未成熟形态随后沿着食管和气管前进，到达胸腔和腹腔，在内脏器官的浆膜表面定居。目前尚不清楚螨是否以及如何返回皮下组织以完成其成熟过程。衰老的标本在皮下组织内退化，在那里它们被肉芽肿性炎症反应包裹，导致形成特征性的钙化结节。
